The Gerstlauer-built ride marks the single largest capital investment in the park’s history and has necessitated a one-acre expansion of the Timber Canyon area.

Set in an abandoned 1900s coal mine, the 1,811ft ride will feature seven eight-passenger cars and will last for around two-and-half minutes.

"I’m so proud of Dollywood and all we’ve accomplished through the years," said Dolly Parton.

"Maybe I’m most proud of Dollywood being named one of the top three theme parks in the entire world. That’s why I thought it was important to build a world-class roller coaster like Mystery Mine – it’s got a world of surprises in store for folks."